A system of ferries connects all colonized islands in the same archipelago. The ferries are available through the island's dock. Travelling via a ferry is instantaneous. At the present time, there is no fee to use a ferry.
Ferries were introduced with Alpha release 2003-06-24. At that time, there was a small fee to use them. They were made free in Alpha release 2003-06-30. The charge returned with the global purse in release 2005-04-06, but it was quickly disabled, due to the whisk to home island option.